Somewhat unrelated, but I have an uncle who used to drive a propane truck for a local CO-OP in central (Browns Spur on the MOPAC) KS. As he was preparing to make a turn off Hwy 54 onto a local blacktop road he was rear-ended by a sleepy semi-driver. The impact flipped the propane truck upside down and sent it sliding down the asphalt road. Fortunately for my uncle, the impact broke the windshield and he was quickly able to drop out of the inverted cab and run. The truck was incinerated and in the process part of the asphalt on the road melted and ran into the ditch. They had to repave a small section of the blacktop. My uncle escaped with a broken collarbone and was missing his hair and eyebrows for a while.......